Group, My plan for precision 60 Hz was to use a Caesium standard and an HP 3320B synthesizer. At about that time, some 200 watt amplifiers became available on eBay. They were designed for public buildings to do elevator music or emergency announcements. Accordingly, they ran on 120 VAC 60 Hz or 28 VDC. 24 VDC was fine but wouldn't quite deliver 200 watts. I bought two. The transformers are large, and have 70.7 volt line outputs. Low voltage boost transformers can get closer to 120 VAC if turning up the volume won't do it.
Never got around to it, and need to lighten the load on the basement floor. The Caesium standard has been sold. Please write to [email protected] for details. I'm in Minneapolis, MN. Also have a Liebert 2 KW sine wave UPS that requires 96 VDC. Bought eight 12V 33 AH batteries for it to keep the time rack running. Six of them died with shorted cells after 6 years, so the Liebert is available. Bill Hawkins _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
